CN109174906A - A kind of apparatus and method solidifying flying dust - Google Patents
A kind of apparatus and method solidifying flying dust Download PDFInfo
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- CN109174906A CN109174906A CN201811008083.3A CN201811008083A CN109174906A CN 109174906 A CN109174906 A CN 109174906A CN 201811008083 A CN201811008083 A CN 201811008083A CN 109174906 A CN109174906 A CN 109174906A
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- Prior art keywords
- flying dust
- solidifying
- microbial inoculum
- blender
- nutrient solution
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- 239000000428 dust Substances 0.000 title claims abstract description 201
- 238000000034 method Methods 0.000 title claims description 40
- 239000000203 mixture Substances 0.000 claims abstract description 84
- 239000010881 fly ash Substances 0.000 claims abstract description 67
- 239000002068 microbial inoculum Substances 0.000 claims abstract description 57
- 235000015097 nutrients Nutrition 0.000 claims abstract description 43
- 238000003860 storage Methods 0.000 claims abstract description 34
- 241001136276 Sphingobacterium multivorum Species 0.000 claims abstract description 9
- 241000894006 Bacteria Species 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 239000002351 wastewater Substances 0.000 claims description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 9
- 230000000813 microbial effect Effects 0.000 claims description 9
- 229940041514 candida albicans extract Drugs 0.000 claims description 8
- 244000005700 microbiome Species 0.000 claims description 8
- 239000012138 yeast extract Substances 0.000 claims description 8
- 239000001888 Peptone Substances 0.000 claims description 7
- 108010080698 Peptones Proteins 0.000 claims description 7
- 238000005276 aerator Methods 0.000 claims description 7
- 239000012153 distilled water Substances 0.000 claims description 7
- 239000001963 growth medium Substances 0.000 claims description 7
- 239000004615 ingredient Substances 0.000 claims description 7
- 235000019319 peptone Nutrition 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 6
- 229940095054 ammoniac Drugs 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 6
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 5
- 239000007836 KH2PO4 Substances 0.000 claims description 5
- BELBBZDIHDAJOR-UHFFFAOYSA-N Phenolsulfonephthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2S(=O)(=O)O1 BELBBZDIHDAJOR-UHFFFAOYSA-N 0.000 claims description 5
- 239000002956 ash Substances 0.000 claims description 5
- 239000004202 carbamide Substances 0.000 claims description 5
- 239000008103 glucose Substances 0.000 claims description 5
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 5
- 229960003531 phenolsulfonphthalein Drugs 0.000 claims description 5
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 5
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 4
- 238000009630 liquid culture Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 235000013305 food Nutrition 0.000 claims description 3
- 239000010813 municipal solid waste Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 241000193830 Bacillus <bacterium> Species 0.000 claims description 2
- 230000036541 health Effects 0.000 claims description 2
- 238000001802 infusion Methods 0.000 claims description 2
- 230000007269 microbial metabolism Effects 0.000 claims description 2
- 239000008399 tap water Substances 0.000 claims description 2
- 235000020679 tap water Nutrition 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 39
- 229910001385 heavy metal Inorganic materials 0.000 description 22
- 238000002386 leaching Methods 0.000 description 19
- 230000008569 process Effects 0.000 description 16
- 238000007711 solidification Methods 0.000 description 14
- 230000008023 solidification Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 239000004568 cement Substances 0.000 description 5
- 230000006641 stabilisation Effects 0.000 description 5
- 238000011105 stabilization Methods 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
- 101000965313 Legionella pneumophila subsp. pneumophila (strain Philadelphia 1 / ATCC 33152 / DSM 7513) Aconitate hydratase A Proteins 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 241000220317 Rosa Species 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 241000726221 Gemma Species 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 239000003102 growth factor Substances 0.000 description 2
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000138 intercalating agent Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/30—Incineration ashes
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses a kind of device for solidifying flying dust, comprising: flying dust storage bin, standing reservoir case, microbial inoculum storage bin and flying dust mixture blender；Flying dust storage bin, standing reservoir case are connected with flying dust mixture blender respectively with microbial inoculum storage bin；Flying dust storage bin is for holding incineration of refuse flyash or being contained with incineration of refuse flyash；Standing reservoir case is for holding nutrient solution or being contained with nutrient solution；For microbial inoculum storage bin for holding microbial inoculum or being contained with microbial inoculum, microbial inoculum contains Sphingobacterium multivorum；Flying dust mixture blender is used for incineration of refuse flyash, nutrient solution and the microbial inoculum being stirred into the flying dust mixture blender.
Description
Technical field
The invention belongs to incineration treatment of garbage fields, are related to a kind of device of flying dust for handling and generating in Refuse Incineration Process
And method.
Background technique
A large amount of flying dusts can be generated in Refuse Incineration Process, according to reckoning, be up to 1.4 to the year two thousand twenty China daily output flying dust amount
Ten thousand tons.Flying dust is entering special sanitary landfills because being listed in hazardous waste rich in poisonous and harmful substances such as heavy metal, dioxin
Field needs to take measures to carry out curing/stabilizing processing before being filled or being recycled.Flyash curing device is mainly taken at present
Cement solidification, medicament chelating, the methods of thermostabilization for reducing heavy metal in incineration of refuse flyash Leaching.
106363793 A of Chinese patent CN (2017-02-01) discloses flyash curing processing system, as shown in Figure 1, its
Disclose: the set system uses cement to reduce the Leaching of fly-ash heavy metal for curing agent, which includes: flying dust storage tank
The feed inlet of the first blender is connected by metering device, water storage tank connects the feed inlet of the first blender by metering pump, the
The feed inlet of the discharge port connection Rose Box of one blender, Rose Box are equipped with water outlet and connect waste water tank, the discharging of Rose Box
Mouth connection pulverizer, pulverizer connect the charging day of the second blender, and the feed inlet of the second blender is also connected with cement storage tank
And water storage tank, the second blender joint block machine, block building machine export cured block.
The deficiency of this technical solution lies in that: cement mixing content is high, and resource consumption is larger, and not environmentally, flying dust after solidification
Big compared to former flying dust increase-volume, heavy metal long term stabilization effect is difficult to ensure.
It is steady that 105964652 A of Chinese patent CN (2016-09-28) discloses a kind of solidification for incineration of refuse flyash
Surely change processing method, it discloses: a kind of incineration of refuse flyash solidification/stabilization treatment method.Chemical stabilization processing adds
Adding agent mainly has inorganic and organic two major classes.Wherein, inorganic heavy metal stable pharmaceutical, have hydroxide, sulfide, silicate,
Carbonate etc., organic medicament are mostly sulfur-bearing basic agent.This method carries out at solidification and stabilization flying dust using mixing chelating agent
Reason, comprising the following steps: chelating curing process is carried out to flying ash using dithiocar-bamate intercalating agent；By cement with
Flying dust progress after chelating curing process is dry-mixed, obtains fly ash mixture；A certain amount of organic fibre is added in fly ash mixture
Tie up silk；A certain amount of polyacrylamide is added in fly ash mixture；Sodium metasilicate is dissolved in water, silicon is injected in fly ash mixture
Acid sodium aqueous solution is stirred evenly and is formed.
The deficiency of this technical solution lies in that: a large amount of waste water can be generated when using medicament chelation treatment, and are difficult to look for
The chemical agent wider to adaptive, when flying dust composition changes, the fluctuation of curing/stabilizing effect is larger.
Document (Zhou Min, Yang Jiakuan, Xiao Mingdan, Du Du incineration of refuse flyash melting and solidification technology [J] of Zhou Min et al.
Environmental hygiene engineering, 2006 (05): 1-3) it discloses: melting and solidification technology: at 1400 DEG C or more, heat occurs for organic matter in flying dust
It decomposes, burn and gasifies, and inorganic matter then melts and forms vitreous slag.After melting, dioxin in flying dust etc. is organic
Pollutant is thermally decomposed.The lower heavy metal salt of boiling point contained in flying dust, gasification phenomenon occurs for small part, most of then turn
It moves on in glassy state slag, SiO2Si-O reticulated structure is formed in melt process, and the slag metal wrapping of immigration is solidificated in
In mesh, extremely stable vitreous slag is formed, reduces the Leaching of heavy metal.
The deficiency of this technical solution lies in that: melting process for the treatment of needs a large amount of thermal energy, and can produce in treatment process
Raw toxic gas, need to carry out vent gas treatment, so that system equipment is complicated, cause processing cost higher.
Summary of the invention
In order to solve the deficiencies in the prior art, microorganism induction carbonate deposition MICP is used the present invention provides a kind of
The processing unit of (microbial induced carbonate precipitation) technical cure flying dust, can be to rubbish
It burns the flying dust generated to be solidified, the device curing process is simple, and increase-volume is less after flyash curing, simultaneously effective reduces
Leaching Heavy Metals, application prospect are good.
Sphingobacterium multivorum (Sphingobacterium multivorum), in the shape of a rod, dispersed arrangement, colony diameter
About 2-3mm, bacterium colony are circle, and yellow is opaque, and surface is smooth, neat in edge.Bacterium is without pod membrane, no gemma, Gram's staining
For feminine gender.Bacterium is bred by fragmentation.The bacterium is heterotrophic bacterium, needs oxygen during the growth process, does not need sun
Light, oxydase reaction are feminine gender.The optimum growth temperature of the bacterium is 30 DEG C or so, and environmental optima pH is 7.0 or so.The bacterium
Addition growth factor and other nutriments are not needed during the growth process.We have discovered that the microorganism is in flying dust environment
(various heavy and organic poison, Leaching are strong, leachate is in strong basicity) still has good existence, fertility, when
When it acts on incineration of refuse flyash, the heavy metal in incineration of refuse flyash can be made to be converted to insoluble salt by mineralization, led to
The effects of crossing precipitating, package reduces the Leaching of heavy metal.
More specifically, first aspect present invention provides a kind of device for solidifying flying dust, the device for solidifying flying dust
It include: flying dust storage bin, standing reservoir case, microbial inoculum storage bin and flying dust mixture blender；
The flying dust storage bin, the standing reservoir case and the microbial inoculum storage bin are mixed with the flying dust respectively
Material blender is closed to be connected；
The flying dust storage bin is for holding incineration of refuse flyash or being contained with incineration of refuse flyash；
The standing reservoir case is for holding nutrient solution or being contained with nutrient solution；
The microbial inoculum storage bin is for holding microbial inoculum or being contained with microbial inoculum, the microorganism
Bacterium solution contains Sphingobacterium multivorum；
The flying dust mixture blender is used for the waste incineration being stirred into the flying dust mixture blender
Flying dust, the nutrient solution and the microbial inoculum.
In some embodiments, the ingredient of the nutrient solution is: sulfate of ammoniac, yeast extract and distilled water；And/or
The microbial bacteria liquid culture medium composition is NaCl, KH2PO4, it is urea, glucose, peptone, phenol red.
In some embodiments, the device for solidifying flying dust further include: flyash curing is cared the car, the flyash curing
It cares the car for flying dust, nutrient solution and the microbial bacteria liquid mixture after the stirring to be transported to fog room, and is conserving
Indoor uniformly oxygen supply, it is ensured that oxygen needed for microbial metabolism simultaneously keeps flyash curing uniform；And/or
Flying dust storage bin bottom is connected with flying dust constant feeder by valve；Flying dust feed inlet is connected to the flying dust
Constant feeder and the flying dust mixture blender；And/or
Standing reservoir bottom portion is connected with microbial inoculum measure hopper by valve；And/or
Standing reservoir bottom portion is connected with nutrient solution measure hopper by valve；And/or
Ash disposal cloth bag is installed at the top of the flying dust storage bin；And/or
Microbial inoculum measure hopper bottom and nutrient solution measure hopper bottom and microbial inoculum atomizer are logical
Valve is crossed to be connected；And/or
Nutrient solution in microbial inoculum and the standing reservoir case in the microbial inoculum storage bin is by peace
Atomizer at the top of the flying dust mixture blender enters flying dust mixture blender；And/or
The device for solidifying flying dust further includes city water control valve door, and the city water control valve door enters for controlling
The pressure and water of the tap water of flying dust mixture blender.
In some embodiments, the device for solidifying flying dust further includes that sliding discharge port and flyash curing are cared the car,
The sliding discharge port and flyash curing are cared the car sliding by the flying dust mixture blender for the flying dust after the completion of stirring
Dynamic discharge port output to flyash curing is cared the car；And/or
The device for solidifying flying dust further includes aerator and breather cloth gas pipe network, the aerator and breather cloth gas pipe network
The flyash curing is mounted on to care the car bottom.
The device for solidifying flying dust further includes dedusting fan, and the dedusting fan is mounted on the flying dust mixture stirring
At the top of machine.
In some embodiments, the device for solidifying flying dust further includes waste water tank, the flying dust mixture blender
Bottom be also equipped with wastewater outlet, be connected by waste water tank water valve with waste water tank.
The application second aspect provides a kind of method for solidifying flying dust, and the method for solidifying flying dust includes following step
It is rapid:
(a) flying dust is inputted into flying dust mixture blender；
(b) following (i) and (ii) are simultaneously or successively executed:
(i) by nutrient infusion flying dust mixture blender；
(ii) microbial inoculum is inputted into flying dust mixture blender, wherein the microbial inoculum contains more food sheath ammonia
Alcohol bacillus；
(c) content in the flying dust mixture blender is stirred with flying dust mixture blender.
In some embodiments, the ingredient of the nutrient solution is: sulfate of ammoniac, yeast extract and distilled water；And/or
The microbial bacteria liquid culture medium composition is NaCl, KH2PO4, it is urea, glucose, peptone, phenol red.
In some embodiments, the method for solidifying flying dust is using solidification flying dust described in the application first aspect
Device realize.
In some embodiments, the method for solidifying flying dust include the following steps: (d) with flyash curing care the car by
The mixture is transported to fog room and carries out curing conservation；And/or
Before carrying out step (a), flying dust constant feeder is first opened, city water control valve door, microorganism are simultaneously closed off
The switch of bacterium solution measure hopper and nutrient solution measure hopper；And/or
In carrying out step (a), flying dust enters flying dust mixture blender by flying dust feed inlet；And/or
In carrying out step (a), dedusting fan is opened, makes to form negative pressure in flying dust mixture blender；And/or
After carrying out step (a), flying dust constant feeder is closed, and running water valve is kept to close；And/or
In carrying out step (b) and (c), opens microbial inoculum measure hopper, nutrient solution measure hopper and flying dust mixture and stir
It mixes machine, microbial inoculum and nutrient solution and flying dust mixture blender is entered by atomizer；And/or
After carrying out step (c), microbial inoculum measure hopper, nutrient solution measure hopper and the stirring of flying dust mixture are closed
Machine opens the sliding discharge port of blender, and the flying dust after stirring, which is exported to flyash curing, cares the car, and opens the oxygen in vehicle of caring the car
The breather cloth gas pipe network of mechanism of qi, bottom of caring the car is started to work, and provides oxygen for flying dust mixture.
In some embodiments, after carrying out step (c), sliding discharge port is closed, flyash curing is cared the car and is pushed away
It send to fog room；And/or
Carry out step (d) among, open the flyash curing care the car in aerator, from bottom ventilation gas distribution pipe network
Oxygen is inputted into the flying dust mixture；And/or
After carrying out step (d), by the flyash curing care the car it is middle complete cured flying dust and export, carry out health and fill out
It buries or resource utilization.
Compared with prior art, the device of the invention solidifies flying dust using microorganism, by generation carbonate, and
Its cementing package action to flying dust, to reduce the Leaching Heavy Metals of flying dust.Apparatus of the present invention, which have, solidifies uniform, increase-volume
The advantages that smaller, environmentally friendly.
Detailed description of the invention
Fig. 1 is the attached drawing of 106363793 A of Chinese patent CN (2017-02-01).
Fig. 2 is the schematic device of the embodiment of the present invention 1.
Fig. 3 is the partial side view of flying dust mixture blender.
Fig. 4 is that the present invention is that fly-ash heavy metal leaches content situation histogram after embodiment 2 is handled.
Specific embodiment
Technical solution in order to preferably explain the present invention, is discussed in detail the embodiment of the present invention with reference to the accompanying drawing.With
Lower embodiment should not be construed as further illustrating the present invention to fixation or limitation of the invention.Unless otherwise specified, real
Applying technical characteristic used in example and could alternatively be has equivalent or identity function or effect under the premise of without departing substantially from inventive concept
Other techniques known in the art features.
A kind of embodiment 1: device solidifying flying dust
As shown in Figures 2 and 3, the present invention provides a kind of device using MICP technical cure flying dust, collection storing, charging,
The functions such as stirring, discharging, dedusting, cleaning, maintenance are in one.Complete equipment is divided into three layers, and the top of steelframe platform 13 is equipped with
Flying dust storage bin 1, standing reservoir case 3, microbial inoculum storage bin 4, middle layer are equipped with flying dust mixture blender 8, bottom
Waste water tank 15 is installed and flyash curing cares the car 16.The flying dust storage bin 1 is for placing incineration of refuse flyash, flying dust storing
1 bottom of storehouse is connected with flying dust constant feeder 7 by valve, and top is equipped with ash disposal cloth bag 2, in flying dust constant feeder 7
Flying dust enters flying dust mixture blender 8 by flying dust feed inlet 12.The microbial inoculum storage bin 4 is for holding microorganism
Bacterium solution.4 bottom of microbial inoculum storage bin is connected with microbial inoculum measure hopper 5 by valve.The standing reservoir case 3 is used
In holding nutrient solution.3 bottom of standing reservoir case is connected with nutrient solution measure hopper 6 by valve.The dedusting fan 9 is installed
At 8 top of flying dust mixture blender, dedusting fan 9 is opened when flying dust enters flying dust mixture blender 8, and flying dust mixture stirs
It mixes and forms negative pressure in machine 8, enter convenient for flying dust.5 bottom of microbial inoculum measure hopper and 6 bottom of nutrient solution measure hopper with it is micro-
Biological bacteria liquid atomizer 11 is connected by valve, microbial inoculum and standing reservoir case 3 in microbial inoculum storage bin 4
In nutrient solution enter flying dust mixture blender 8 by being mounted on the atomizer 11 at the top of flying dust mixture blender 8.Mist
Change nozzle 11 and flying dust mixture blender 8 is used in combination, microbial inoculum and nutrient solution can be made more uniformly to be sprinkled upon flying dust
On.Incineration of refuse flyash, nutrient solution and the microbial inoculum that flying dust mixture blender (8) is stirred into, can make microbial bacteria
Liquid and nutrient solution are evenly distributed between fly ash granule, are enabled MICP product to generate preferably cementing and package to flying dust and are made
With to reduce the Leaching of Heavy Metals concentration of flying dust.
Water supply pipe is directly connected with flying dust and bacterium solution pipeline, enters flying dust by the control of city water control valve door 10 and mixes
Expect blender 8, can more effectively clean remaining bacterium solution and flying dust in pipeline and blender.Flying dust after the completion of solidification is by described
Flying dust mixture blender 8 slides discharge port 17 and cares the car 16 into flyash curing, and the flyash curing, which is cared the car, 16 to be equipped with
Aerator 19, bottom of caring the car are equipped with breather cloth gas pipe network 18, which can uniformly supply oxygen in maintenance processes, it is ensured that micro- life
Oxygen needed for object metabolic process simultaneously keeps flyash curing uniform, when flyash curing flying dust mixture in 16 of caring the car reaches a certain amount of
When, will care the car to push in flying dust fog room conserves.Can be stored simultaneously in the flying dust fog room it is multiple care the car, conserve
Indoor curing temperature is 30 DEG C, humidity 95%.The bottom of the flying dust mixture blender 8 is also equipped with wastewater outlet, leads to
The control of waste water tank water valve 14 is crossed to be connected with waste water tank 15.
Curing process is carried out to the flying dust for entering flying dust mixture blender 8 with microbial inoculum, is flown what stirring was completed
Ash is put into care the car after, be pushed into flying dust fog room and conserve, consolidate to sanitary filling field contamination control standard is reached after processing
Change flying dust and carries out landfill disposal or resource utilization.
The specific ingredient of microbial inoculum is shown in microbial inoculum ingredient in embodiment 2.
The ingredient of nutrient solution is: sulfate of ammoniac ((NH4)2SO4), yeast extract (yeast extract) and distilled water.Its
Weight ratio is 1:2:100.The effect of sulfate of ammoniac is addition growth factor, and the effect of yeast extract is to provide nutriment,
The effect of distilled water is to provide moisture and growing environment.
Embodiment 2: a method of solidification flying dust
Using the device of embodiment 1, carrying out the cured process of MICP is:
Flying dust constant feeder 7 is first opened, city water control valve door 10, microbial inoculum measure hopper 5 and battalion are simultaneously closed off
The switch of nutrient solution measure hopper 6 weighs quantitative flying dust, enters flying dust mixture blender 8 by flying dust feed inlet 12, opens simultaneously
Dedusting fan 9, flying dust mixture blender 8 is interior to form negative pressure, enters convenient for flying dust.After the completion of flying dust enters, it is fixed to close flying dust
Batcher 7 is measured, and running water valve 10 is kept to close, it is mixed to open microbial inoculum measure hopper 5, nutrient solution measure hopper 6 and flying dust
Material blender 8 is closed, microbial inoculum and nutrient solution pass through atomizer 11 and enter flying dust mixture blender 8.It is completed in solidification
Afterwards, microbial inoculum measure hopper 5, nutrient solution measure hopper 6 and flying dust mixture blender 8 are closed, the sliding for opening blender 8 goes out
Material mouth 17, the flying dust mixture after stirring enter to flyash curing and care the car 16, open simultaneously the oxygen machine 19 in caring the car, and support
The breather cloth gas pipe network 18 for protecting vehicle bottom is started to work, and provides oxygen for flying dust mixture.After the completion of discharging, sliding discharging is closed
Mouthfuls 17, flyash curing is cared the car and 16 pushes to fog room.Open city water control valve door 10 and waste water tank water valve 14, cleaning pipe
Remaining bacterium solution and flying dust in road and blender.Waste water in waste water tank can access city water control valve door 10, repeatedly to recycle
It uses.When flyash curing, which is cared the car, reaches flying dust mixture ultimate bearing capacity in 16, flyash curing is cared the car, and it is feeding to push to
Protect room maintenance.Each link whole process is closed during flyash curing, and cleans bacterium solution, fly ash carry pipeline and blender in time, keeps away
The leakage for having exempted from flying dust reduces the pollution to environment.
The process for preparation of microbial inoculum:
Microorganism fungus kind source: Sphingobacterium multivorum thallus is in the shape of a rod, dispersed arrangement, colony diameter about 2-3mm, bacterium colony
For circle, yellow is opaque, and surface is smooth, neat in edge.Bacterium is feminine gender without pod membrane, no gemma, Gram's staining.Bacterium
It is bred by fragmentation.The bacterium is heterotrophic bacterium, needs oxygen during the growth process, does not need sunlight, oxidizing ferment is anti-
It should be negative.The optimum growth temperature of the bacterium is 30 DEG C or so, and environmental optima pH is 7.0 or so.More food sphingol bars
Bacterium is widespread in nature, and is non-pathogenic mushroom, and no environmental risk has environment friendly.Sphingobacterium multivorum
Culture medium group becomes NaCl (5g/L), KH2PO4(2g/L), urea (2g/L), glucose (0.1g/L), peptone (1g/L),
0.2% phenol red (4ml/L).
Sphingobacterium multivorum used in this patent is bought from Shanghai Fu Sheng Industrial Co., Ltd., brand: DSMZ, goods
Number: FS-GZ1233.
The microbial bacteria liquid making method in bacterium solution manufacture system: by peptone, yeast extract, sodium chloride with 3~7:1~5:
15~30 mass ratio is placed in the distilled water measured again compared to 200 mass of peptone and prepares culture medium, in 121 DEG C of high temperature,
Under 0.15MPa high pressure, sterilize after 15~20min, Sphingobacterium multivorum be seeded in culture medium, then at 20~35 DEG C and
24~48h of shaken cultivation is carried out on 180~240r/min shaking table, until the OD of bacterium solution600Value reaches 1.0~2.0；
The microbial inoculum and incineration of refuse flyash that above-mentioned steps are prepared are 200~400mL by liquid-solid ratio:
1000g ratio is mixed evenly, and solidification flying dust is obtained after conserving under conditions of temperature is 30 DEG C, humidity is 95%.
Embodiment 3: specific test
Respectively to before processing incineration of refuse flyash and treated in identical weight source solidification flying dust natural air drying, press
" solid waste Leaching leaching method level shakes method " (HJ/T557-2010) carries out producing for leachate, utilizes inductance
Couple plasma mass spectrometer ICP-MS (Inductively coupled plasma mass spectrometry) is to leaching
Liquid carries out content of beary metal test, obtains Leaching of Heavy Metals amount reduced rate, i.e., solidification flying dust is soaked than incineration of refuse flyash heavy metal
The ratio of reduction amount and incineration of refuse flyash Leaching of Heavy Metals amount out.Leaching of Heavy Metals amount reduced rate is as shown in Figure 4.
The Leaching of Heavy Metals amount reduced rate shown according to Fig. 4, which can be seen that, carries out incineration of refuse flyash using the device
After curing process, the leaching content of heavy metal can obviously reduce.The wherein Leaching of Heavy Metals amount reduced rate highest of Cu, Pb and Cd,
The Leaching of Heavy Metals amount reduced rate for having reached 99% or more, Cr is lower, is 46.7%.It can be seen that can obviously reduce using the device
The Leaching Heavy Metals of incineration of refuse flyash can obtain good flyash curing/stabilization effect.Above each embodiment
Be only intended to further illustrate the present invention, be not for limiting the scope of the invention, it is all based on design of the invention
Made equivalents and to each technical solution conspicuous improvement of the invention, each fall within protection model of the invention
It encloses.
Claims (10)
1. a kind of device for solidifying flying dust, the device for solidifying flying dust includes: flying dust storage bin (1), standing reservoir case
(3), microbial inoculum storage bin (4) and flying dust mixture blender (8)；
The flying dust storage bin (1), the standing reservoir case (3) and the microbial inoculum storage bin (4) respectively with it is described
Flying dust mixture blender (8) is connected；
The flying dust storage bin (1) is for holding incineration of refuse flyash or being contained with incineration of refuse flyash；
The standing reservoir case (3) is for holding nutrient solution or being contained with nutrient solution；
The microbial inoculum storage bin (4) is for holding microbial inoculum or being contained with microbial inoculum, the microorganism
Bacterium solution contains Sphingobacterium multivorum；
The rubbish that the flying dust mixture blender (8) is used to be stirred into the flying dust mixture blender (8) is burnt
Burn flying dust, the nutrient solution and the microbial inoculum.
2. solidifying the device of flying dust as described in claim 1, it is characterised in that:
The ingredient of the nutrient solution is: sulfate of ammoniac, yeast extract and distilled water；And/or
The microbial bacteria liquid culture medium composition is NaCl, KH2PO4, it is urea, glucose, peptone, phenol red.
3. solidifying the device of flying dust as claimed in claim 1 or 2, it is characterised in that:
The device for solidifying flying dust further include: flyash curing is cared the car (16), the flyash curing care the car (16) for will
Flying dust, nutrient solution and microbial bacteria liquid mixture after the stirring are transported to fog room, and uniformly supply oxygen in fog room,
Ensure oxygen needed for microbial metabolism and keeps flyash curing uniform；And/or
Flying dust storage bin (1) bottom is connected with flying dust constant feeder (7) by valve；Flying dust feed inlet (12) is connected to institute
State flying dust constant feeder (7) and the flying dust mixture blender (8)；And/or
Ash disposal cloth bag (2) are installed at the top of the flying dust storage bin (1)；And/or
Standing reservoir case (3) bottom is connected with microbial inoculum measure hopper (5) by valve；And/or
Standing reservoir case (3) bottom is connected with nutrient solution measure hopper (6) by valve；And/or
Microbial inoculum measure hopper (5) bottom and nutrient solution measure hopper (6) bottom and microbial inoculum atomizer
(11) it is connected by valve；And/or
Nutrient solution in microbial inoculum and the standing reservoir case (3) in the microbial inoculum storage bin (4) passes through
It is mounted on the atomizer (11) at the top of the flying dust mixture blender (8) and enters flying dust mixture blender (8)；And/or
The device for solidifying flying dust further includes city water control valve door (10), and the city water control valve door (10) is for controlling
Tap water enters flying dust mixture blender (8).
4. solidifying the device of flying dust as described in claim 1, it is characterised in that:
The device for solidifying flying dust further includes that sliding discharge port (17) and flyash curing are cared the car (16), the sliding discharge port
(17) and the flyash curing care the car (16) for the flying dust after the completion of stir by the flying dust mixture blender (8) cunning
Dynamic discharge port (17) output to flyash curing cares the car (16)；And/or
The device for solidifying flying dust further includes aerator (19) and breather cloth gas pipe network (18), the aerator (19) and ventilation
Gas distribution pipe network (18) is mounted on the flyash curing and cares the car (16) bottom；And/or
The device for solidifying flying dust further includes dedusting fan (9), and the dedusting fan (9) is mounted on the flying dust mixture and stirs
It mixes at the top of machine (8).
5. solidifying the device of flying dust as described in claim 1, it is characterised in that:
The device for solidifying flying dust further includes waste water tank (15), and the bottom of the flying dust mixture blender (8) is also equipped with useless
Water out is connected by waste water tank water valve (14) with waste water tank (15).
6. a kind of method for solidifying flying dust, the method for solidifying flying dust includes the following steps:
(a) flying dust is inputted into flying dust mixture blender (8)；
(b) following (i) and (ii) are simultaneously or successively executed:
(i) by nutrient infusion flying dust mixture blender (8)；
(ii) microbial inoculum is inputted into flying dust mixture blender (8), wherein the microbial inoculum contains more food sphingols
Bacillus；
(c) content in the flying dust mixture blender (8) is stirred with flying dust mixture blender (8).
7. solidifying the method for flying dust as claimed in claim 6, it is characterised in that:
The ingredient of the nutrient solution is: sulfate of ammoniac, yeast extract and distilled water；And/or
The microbial bacteria liquid culture medium composition is NaCl, KH2PO4, it is urea, glucose, peptone, phenol red.
8. the method for solidifying flying dust as claimed in claims 6 or 7, it is characterised in that: the method for solidifying flying dust be using
What the device according to any one of claims 1 to 5 for solidifying flying dust was realized.
9. the method for solidifying flying dust as described in claim 6 or 7 or 8, it is characterised in that:
The method for solidifying flying dust include the following steps: (d) with flyash curing care the car (16) mixture is transported to
Fog room carries out curing conservation；And/or
Before carrying out step (a), flying dust constant feeder (7) first are opened, simultaneously close off city water control valve door (10), micro- life
The switch of object bacterium solution measure hopper (5) and nutrient solution measure hopper (6)；And/or
In carrying out step (a), flying dust enters flying dust mixture blender (8) by flying dust feed inlet (12)；And/or
It in carrying out step (a), opens dedusting fan (9), makes to form negative pressure in flying dust mixture blender (8)；And/or
It after carrying out step (a), closes flying dust constant feeder (7), and running water valve (10) is kept to close；And/or
In carrying out step (b) and (c), microbial inoculum measure hopper (5), nutrient solution measure hopper (6) and flying dust mixture are opened
Blender (8), microbial inoculum and nutrient solution enter flying dust mixture blender (8) by atomizer (11)；And/or
After carrying out step (c), microbial inoculum measure hopper (5), nutrient solution measure hopper (6) and the stirring of flying dust mixture are closed
Machine (8), opens the sliding discharge port (17) of flying dust mixture blender (8), and flying dust mixture enters to flyash curing and cares the car
(16)。
10. the method for solidifying flying dust as described in claim 6 or 7 or 8 or 9, it is characterised in that:
After carrying out step (c), close sliding discharge port (17), by flyash curing care the car (16) push to fog room；With/
Or
In the aerator (19) for open among step (d) flyash curing and caring the car in (16), from bottom ventilation gas distribution
Pipe network (18) inputs oxygen into the flying dust mixture；And/or
After carrying out step (d), the flyash curing is cared the car, and (16) are middle to complete cured flying dust output, carries out health and fills out
It buries or resource utilization.
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| CN201811008083.3A CN109174906B (en) | 2018-08-31 | 2018-08-31 | Device and method for solidifying fly ash |
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|---|---|---|---|
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| CN109174906B (en) | 2021-04-27 |
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Application publication date: 20190111 Assignee: ZHEJIANG WANSHOU ARCHITECTURAL ENGINEERING CO.,LTD. Assignor: ZHEJIANG SCI-TECH University Contract record no.: X2022330000307 Denomination of invention: A device and method for solidifying fly ash Granted publication date: 20210427 License type: Common License Record date: 20220715 |
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